WO2007071797A1 - Systeme distribue de transmission bidirectionnelle d'ondes guidees et/ou irradiees - Google Patents

Systeme distribue de transmission bidirectionnelle d'ondes guidees et/ou irradiees Download PDF

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Publication number
WO2007071797A1
WO2007071797A1 PCT/ES2005/070179 ES2005070179W WO2007071797A1 WO 2007071797 A1 WO2007071797 A1 WO 2007071797A1 ES 2005070179 W ES2005070179 W ES 2005070179W WO 2007071797 A1 WO2007071797 A1 WO 2007071797A1
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WO
WIPO (PCT)
Prior art keywords
transition
metallization
assembly
guided
connection
Prior art date
Application number
PCT/ES2005/070179
Other languages
English (en)
Spanish (es)
Inventor
Ignacio Muñoz De Juan
Jose Manuel Gomez Pulido
Original Assignee
Uralita Sistemas De Tuberias, S.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Uralita Sistemas De Tuberias, S.A. filed Critical Uralita Sistemas De Tuberias, S.A.
Priority to PCT/ES2005/070179 priority Critical patent/WO2007071797A1/fr
Publication of WO2007071797A1 publication Critical patent/WO2007071797A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/04—Fixed joints
    • H01P1/045—Coaxial joints
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/04—Fixed joints
    • H01P1/047—Strip line joints

Definitions

  • the object of the present invention is a distributed system of bidirectional transmission of guided and / or radiated waves, by means of coaxial conduits for the guidance and graduated radiation of radio signals in a wide frequency spectrum (GSM, UMTS, WiFi, Digital Radio, etc.) .
  • GSM Global System for Mobile communications
  • UMTS Universal Mobile Subscriber Identity
  • WiFi Wireless Fidelity
  • Digital Radio etc.
  • the distributed system of transmission of the invention by the fact allowing a double graduation; on the one hand radiation graduation i takes place at the radiation points, while; On the other hand it is possible to configure the graduation of Ic transmission directions, that is to say that one of the transmission directions is preferred.
  • the guidance system and distribution of single-mode and / or multi-mode waves allowing the frequency bands of the various radio or radio frequency communications services to be covered in the case of electromagnetic waves.
  • the developed transmission system characterizes the fact of working in a wide range of fre ⁇ hE ⁇ eád ⁇ s bands of great interest in mobile communications such as GSM DCS, UMTS, WLAN, WIFI, WIMAX bluetooth, radio communications and broadcasting and other types of radio networks.
  • the system object of the invention is basically formed by a series of transmission lines formed: - 0, by a single cylindrical duct manufactured ce dielectric material, which has a circular perforation that runs longitudinally along its axis, and arranged in relation to the conduit of fo: coaxial and concentric, - or, composed of two concentric tubes made of dielectric material arranged coaxially, and in which the interic space between the tubes is filled with dielectric material.
  • all transition parts, splices, elbows, antennas are part of the system.
  • connection in the inner coaxial tube or in internal metallization requires a conductive contact, and can be used as a connection non-conductive capacitive contact, deriving from the capacitive contact designed low levels of passive intermodulation products (PIM).
  • PIM passive intermodulation products
  • the present invention is circumscribed within the scope of the conduction or guided wave media, as well as the radiation means thereof covering all types of waves, from transverse to longitudinal.
  • the coverage techniques for antennas or clusters c are cheaper and easier to implement. ; However, they only provide acceptable results in cases of open or open areas. And in those cases it is necessary to provide coverage in remote areas, they produce high levels of radiation in the areas adjacent to the site.
  • the number of antennas must be increased, as well as the power of the radio signal, which implies a greater circulation coaxial cable; Dividers, directional couplers, repeaters, etc., in the distribution network, all leading to increased deployment costs, involving excessive distribution losses so that antenna distribution is complicated too much when there are numerous obstacles between radio terminals hinder the direct radio visibility between the two.
  • the radiant cable coverage technique uses a coaxial cable that has in its outer conductor and series of grooves that connect the region of the internal conductc of the cable with the exterior of the cable.
  • the distribution of the fields in the vicinity of the exteric of the grooved cable makes the signal in this area very quickly when we move away from the cable.
  • Another solution is the mixed technique that radiates Ic signals previously distributed by means of a physical support guided constituted by optical fiber, which presents its greatest cost as disadvantages, due to the large barrel of electro-optical converters that it needs and the cost c the distribution by antennas that is required at the end of the network.
  • the difficulty related to the attenuations of signals and that is present in waveguide distribution systems in general, are due to Ic structural characteristics of the transmission system, as well as to the nature of the materials used, with the attenuations of the connectors used for the transition of the signals from the transmission media to the conduits or me to guide the waves.
  • PIM passive intermodulation
  • the transmission can be graduated differently without the need to use directional couplers and
  • the system object of the present invention of sister distributed bidirectional transmission of guided and / or radiated waves, allows thaansmission and graduated radiation of radio signals in a wide frequency spectrum (GSM, UMTS, WiFi, Digital Radio, etc).
  • hard-to-reach areas examples include urban areas where field levels may be high, if this invention is used, or all types of interior tunnel tunnels and in general highly built areas.
  • the invention is of interest in all types of wireless communications, including mobile telephony,
  • WIFI and radio networks It is also of interest for the f integration of the antennas with the buildings, with a clear aesthetic improvement by avoiding the use of traditional 1 ⁇ antennas and the distribution network of mobile communications.
  • the distributed system of graduated bidirectional transmission of guided and / or radiated waves aims to achieve for all types of electromagnetic waves a guided transmission of them with very low losses, thus a more uniform distribution in any area.
  • this bidirectional system is of special interest in those areas where by its own configuration the distribution of the waves is more difficult.
  • Electromagnetic waves are those used in mobile communication bands and wireless applications, including, among others, GSM, DCS,
  • the system object of the invention basically consists of a series of shaped transmission lines:
  • the communication that is established is bidirectional, from the base station or access point or server h the users or from the users or terminals to the base station or access point or centr server; Being both base stations and terminal users, both transmitters and receivers of signals.
  • the transmission system which as we have just indicated, is formed by a series of sections of line; either formed from a single duct axially perforated concentrically, or formed by coaxial concentric ducts, where the interior space between them is occupied by a dielectric c low losses (air, polyethylene, air plus PVC rings etc. ).
  • a dielectric c low losses air, polyethylene, air plus PVC rings etc.
  • there is a series of metallizations in the case of a single duct, this presents a concentric axial perforation metallization and another metallization on its outer face subsequently covered by a plastic protection.
  • the interic tube has a metallization on its outer face, while the outer tube has a metallization on its c; inside that covers the edges of the outer tube leave a layer of metallization by the outer part of the outer ti of the ends of the sections of line.
  • the transmission lines formed either by concentric conduits arranged coaxially, or by a single axially perforated conductor, have such a configuration and design in their construction characteristics, which allow an electrical continuity for the external metallization of the external conduit, achieving also for the inner coaxial tube a high-quality electrical connection of capacitive, non-conductive type, which avoids the inconveniences of passive intermodulation (PIM), especially in cases of high power transmission.
  • PIM passive intermodulation
  • PIM passive intermodulation
  • the dielectric material disposed in the space between the two concentric ducts arranged in a coaxial manner is characterized by its dielectric constant ⁇ r, and by its loss value, represented by t ⁇ j.
  • the dielectric material chosen must have a lower ⁇ tglo value, since it has a decisive influence on insertion losses.
  • the outer conduit of the transmission system presents the outer plastic protection so that it does not reach the end, leaving the exteric metallization carried out over the outer duct.
  • said plastic protection has very close to the ends of. '' We have hook grooves with the transition and splice parts, the plastic protection end presenting a chamfer, both being machined with useful.
  • elbows regardless of open or closed Ic, are at their ends or straight sections in order to allow a perfect fixation of the splice assemblies.
  • transition pieces designed to achieve the transition from commercial connectors to the conduits, they are composed of an internal transition separator, another internal complementary transition separator, both made of dielectric material and housed inside a connector of the transition assembly, on whose end £ they have a standardized connector and a threaded piece.
  • the connecting body of the transition assembly is connected to the end of the line sections by means of a splicing sleeve, made of plastic material, which has an annular geometry and inside cu, next to one of its ends there is bulging for connection with the sections of the line, it also showed that on the inside, and on the other end there is a threaded section that threads over the threaded end of the connecting body.
  • the interior separators are axially perforated along their entire length, the perforation section not being uniform, with an internal step, which allows the interior connection metal part to be fixed and fixed.
  • this one is designed, made of materials that have low losses, with two internal separators of the same geometry, housed inside a body ⁇ connector, which surrounds the sections of Ii] to join at both ends.
  • the body of the splice assembly has a double internal step in each of its ends that makes the ends have a larger diameter than the central one, the central interior part of the splice assembly body being metallized and housing a connection ring in each of the steps, being arranged in the space between the defined steps.
  • the constructive characteristics of the radiation elements it should be noted that, either they are arranged on sections of Ii] as intermediate elements, and they may be excited by any of their ends with different graduation, or bie used as a terminal element being excited only by one end.
  • the corresponding transition element is arranged after the c-element, in which the connector is replaced by a commercial load.
  • the radio element is arranged as an intermediate element that can be excited by any of its ends
  • some sections of line are provided that have windows through which the antenna rods pass, from inner duct to the outside, being fixed in the inner conductor by any method.
  • patches are arranged, which are arranged on a dielectric patch support piece with a geometry complementary to that of the outer conductc, and which has perforations through. ' which are passed the rods of the radiant elements.
  • Figure 1 shows a longitudinal section made in section of line, in a first preferred embodiment of the invention, in which the section of line is made with cylindrical plastic body perforated in its axis.
  • Figure 2 shows a longitudinal section made by section of the line, in a second preferred embodiment of the invention, in which the section of the line is formed by two concentric arranged ducts arranged coaxially.
  • Figure 3 shows a longitudinal section of the element of transition in its union with the section of line.
  • Figure 4 shows the internal longitudinally sectioned transicic separator.
  • Figure 5 shows the complementary interior separator c transition used in a transition assembly, to which a section has been made along a longitudinal plane.
  • Figure 6 shows the body of the longitudinally sectioned transition assembly connector.
  • Figure 7 shows the coupling sleeve used in connection between the line section with the transition assembly, sectioned longitudinally.
  • Figure 8 shows in sectioned form by a longitudinal pl, the joint between two sections of line, as well as the used splicing element.
  • Figure 9 shows, in a longitudinal section, the connector body of the splice assembly
  • Figure 10 represents a longitudinal section made to a section of line, on which they are fixed ⁇ set of radiating elements arranged intermediately on a section of line being able to be excited from any of its ends. Likewise and in a complementary way, the sections carried out in line section by the A-A and B-B planes are shown.
  • Figure 11 is a perspective representation of a radiant assembly in which the part of the patches is not shown, in order to be able to observe better trajectory of the patch rods.
  • Figure 12 is a representation of a sectioning elbow along its longitudinal axis.
  • the system object of the invention basically consists of a series of shaped transmission lines:
  • the line section is formed by a single cylindrical conduit (1) made of dielectric material, and on which a circular perforation (2) arranged coaxially and concentric with the duct (1).
  • a metallization (3) has been carried out while on the outer part of the duct (1) a metallization (4) has also been carried out.
  • the line section assembly on its outer face, had a plastic coating (5).
  • This plastic coating (5) does not reach the end of the section of Ii leaving a bare section (6) of metallization (4) in the air.
  • the plastic coating (5) has a peripheral groove (7) near its ends, used for fixing the transition assembly (see figure 3), and ⁇ splice assembly (see figure 8).
  • the plastic coating ends (5) have a chamfering (8), obtaining both the groove (7) and the chamfering simultaneously by machining with tools.
  • the line section is formed by two plastic tubes or conduits, an inner one (9) and an outer one (10), coaxial and arranged concentrically, and in which the interior space between the t is filled with low loss dielectric material.
  • the line section assembly in its outer conduct, has a plastic coating (5).
  • This plastic coating (5) does not reach the end of the outer conduit (3), leaving the exposed section (6 metallization (10.2) in the air, also counting the plastic coating (5 ), close to its ends with a peripheral ranui (7) and with a chamfered termination (8).
  • FIG 3 the union of a transition joint with a section of line is shown.
  • the set of transic. It is formed by an inner transition separator (11), a complementary internal transition separator (12), both housed inside a connector body (. of the transition assembly, and on which standard connector (16) and a fixed threaded piece (17).
  • the inner transition separator (11) has a cylindrical base form from which a hollow rod emerges is housed in the circular inner perforation (2) of the cue: plastic (1), presenting dimensions such that when introduced into the inner perforation (2) is in contact with the internal metallization (3), so that it defines a capacitive coupling zone (21), responsible for achieving a splice without passive intermodulation (PIM).
  • PIM passive intermodulation
  • the connecting body (14) of the transition assembly for fixing on the end of the line section serves as a splice sleeve (15).
  • This splice sleeve (15) has an annulled bulge (15.1) near its inner face, which is housed over the peripheral groove ('made in the plastic coating (5) of the line sections. coupling and fixing between the sleeve c splice (15) and the body of the connector (14) is real: by threading.
  • the inner connecting metal part (13) is housed.
  • the interior transition separator (11) has a cylindrical body (11.2), from which a hollow rod (11.1) emerges, responsible as we have just explained serving for capacitive coupling. Both parts, the cylindrical body (11.2) and the hollow rod (11.1) have a hollow interior (11.3) of a coincident axis, the diameter of the hole made on the cylindrical body (11.2) being greater than on the rod (11.1), of so that it is an internal step (11.4), at the meeting point both hollow interiors. This step serves as a stop pai one of the ends of the metal part (13) (figure 3 internal connection.
  • the complementary part (12) of internal transition is observed, which has two perforations (12.1) and (12.2) sections of coinciding axis, with perforation (12.1) being larger diameter than (12.2), moti ⁇ defining a staggering (12.3) in encounter of both perforations.
  • This step (12.3) stops at the other end of the met piece (13) (figure 3) of internal connection.
  • the metal part (13) of internal connection is a cylindrical piece that has a central part returned, from whose ends emerge two parts of smaller diameter, defining two steps (13.1) spaced apart from each other a distance equal to the distance between the steps (11.4) and (12.3), of the inner transition separator (I) and the complementary separator (12) respectively, once they are coupled together within the body connect (14) of the assembly transition, therefore Ic staggered (13.1) of the metal part (13) of internal connection, butt on the steps (11.4) and (12.3) being immobilized in its longitudinal displacement.
  • the connector cu (14) of the transition assembly has an annular ring open in its interior, and that at the end it connects with the line section has a threaded area (14.2 ), while in its inter part: there is an annular step (14.1), carried out at a distance from its free end equal to the length of the bare t (6) of the outer metallization.
  • the threaded area (14.3) can be observed for connection with threaded part (17) (figure 3).
  • the coupling sleeve (15) presented an annular shape, which has at the connecting end the connecting body (14), and on the inside, a threaded (13.2), on which the part threads threaded (14 of the connector body (14).
  • the empire sleeve (15) has an annulled bulge (15.1) inside it that serves to lodge and fix in the perimeter groove (7) made on the plastic coating (5) (figure 3).
  • the connecting body (14) is made of metallic material
  • the coupling sleeve (15) is made of plastic material or the like, so that it has sufficient deformability for proper coupling. over the ends of the line sections.
  • the section between the two sections of the line is shown in a sectioned manner by means of a splice assembly.
  • the empa set! It is basically formed by a splice body (18) whose interior houses two interior spacers (32) qi. they are the same and they are arranged in a speculative manner, housing a metal part (20) c inside connection.
  • the interior separators (32) of the splice assembly have the same construction characteristics as the interior separator (11) of the transition assembly, eg at both ends of the metal part (20) inside the emergent stems of Ic internal separators (32) also define capacitive couplings (21), as do the capacitive couplings (21) of the transition assembly ( Figure 3).
  • the body part (18) of the splice assembly has a widening (18.1) on both ends so that the defined interic diameter fully embraces the plastic coating (5), either of the conduit single (1) or of the conduit ⁇ exterior (10), when the sections of the line are formed by two conduits, defining in its interior part ⁇ zones of a double step (18.4), so that the space between both steps is arranged i connection ring (19), of width equal to the length between both steps, and of thickness equal to the jump ⁇ step against which the connection ring (19) rests.
  • the body part (18) of the splice assembly in its widened part (18.1) and by its pa: interior has annular annular bulges (18.2) that are used for accommodation in the peripheral grooves (7) of the coating plastic (5).
  • FIG 10 the structural characteristics of a radiation assembly (22) are shown, being arranged on a section of line, which has interior space (27) of the perforation (2), made c in such a way that it allows fixing of the rods (2: on the other hand on the conductor (1) or on the outer cond (10) there are made two windows (28) and (29), through which said rods (23) pass, which at the ends patches (26) and (25) are fixed on a support piece (24) of the patches, made of dielectric material.
  • the support piece (24) of the patches (25) has a basically parallelepipedic geometry in which on one of its faces a semi-circular re of equal dimensions to those of the c transmission assembly has been made, so that it rests on the transmission set
  • the rods (23) are fixed on the inside (27), by means of inserts (30), and can be fixed by any method, while its other end is inserted in the inclined perforations that present the patches (25) and (26) .
  • the length of the patches (25) and (26) is not the same, rods (23) are fixed on one of the opposite ends of the patches, and since they have no igi length, no the rods (23) are arranged perpendicularly.
  • FIG 12 a section along its length of an elbow (31) has been shown which, as we have mentioned in the description of the invention: it may have any degree of change of direction of. ' transmission lines.
  • the cone (31) maintaining the configuration of the line sections, is to review extension (33) in a straight way from its ends, in order to allow a correct insertion and fixation, either of a transition set or a joint assembly .

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  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

L'invention concerne un système distribué de transmission bidirectionnelle d'ondes guidées et/ou irradiées gradué permettant la transmission et le rayonnement de signaux radio dans un large spectre de fréquences au moyen de conductions coaxiales, avec une faible atténuation, un rayonnement distribué avec de faibles niveaux de pertes, et une distribution graduée dans les points de rayonnement comme dans le sens de la transmission, permettant ainsi d'obtenir une couverture radioélectrique dans des zones d'accès difficile. Les connexions entre les différents éléments présentent des niveaux très bas presque négligeables d'intermodulation passive, grâce à des tronçons de ligne formés par un conduit perforé de manière axiale et métallisé sur ses deux faces, ou par des tubes plastiques coaxiaux disposés de manière concentrique, également métallisés, la métallisation extérieure étant dans les deux cas recouverte d'un revêtement plastique extérieur. Ledit système est également formé d'ensembles de couplage, et d'assemblage, la connexion avec le tube intérieur étant capacitive, et comprend également un ensemble de rayonnement.
PCT/ES2005/070179 2005-12-19 2005-12-19 Systeme distribue de transmission bidirectionnelle d'ondes guidees et/ou irradiees WO2007071797A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/ES2005/070179 WO2007071797A1 (fr) 2005-12-19 2005-12-19 Systeme distribue de transmission bidirectionnelle d'ondes guidees et/ou irradiees

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PCT/ES2005/070179 WO2007071797A1 (fr) 2005-12-19 2005-12-19 Systeme distribue de transmission bidirectionnelle d'ondes guidees et/ou irradiees

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